One thing is certain, the turbo lag is definitely the biggest downfall of the stock MR. When you are running the air conditioning in first gear there is almost zero power before the turbo kicks in. That is partially because of the Automatic tranny. It's more of a hesitation than lag. With some bolt on upgrades you can easily minimize the "lag".
We have a list of bolt on upgrades that will significantly reduce this issue. These are DIY upgrades so there is no need to pay someone to do it, I mean you already paid around 35,000 for your car!!
Add these items:
Greddy Racing 70mm Downpipe: EVO X (162.00)
Greddy Racing Ti-C Catback Exhaust: EVO X (945.00)
Injen Cold Air Intake & Upper IC Pipe: EVO X (509.00)
HKS SSQV Blow Off Valve KitL EVO X (261.00)
Have your ECU reprogrammed also. Price varies.
Your Estimated HP will be above 400.
For detailed installation information leave a comment and I will post a pdf.